1 Scope

1.1 These requirements cover battery chargers rated 600 volts or less and intended for household or commercial use to charge lead-acid engine-starter and other starting, lighting, and ignition (SLI) type batteries, in accordance with NFPA 70^®, National Electrical Code^® (NEC^®). The requirements also cover a battery charger intended to be permanently installed on a boat.

NFPA 70^®, National Electrical Code^®, and NEC^® are registered trademarks of the National Fire Protection Association, Quincy, MA.

1.2 A battery charger for use with an internal combustion engine driving a centrifugal fire pump shall comply with the requirements of this Standard and the applicable requirements for the end product.

1.3 These requirements do not cover the following types of battery chargers:

1. a) Battery chargers for use in industrial applications as covered by the Standard for Industrial Battery Chargers, UL 1564;

2. b) Battery charger systems for use in electric vehicle applications covered by the Standard for DC Charging Equipment for Electric Vehicles, UL 2202;

3. c) Battery chargers for use with portable tools or household appliances as covered by the Standard for Power Units Other Than Class 2, UL 1012, or the Standard for Class 2 Power Units, UL 1310; and

4. d) Battery chargers for fire protection signaling service.

Summary of Topics

This new Ninth Edition of ANSI/UL 1236, dated April 28, 2026, incorporates editorial changes including renumbering and reformatting to align with current style.